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6 Messages

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220 Points

Thu, Aug 7, 2014 1:42 AM

Camera Raw: Support openEXR

I use Adobe Camera Raw (ACR) to tone map HDR photos, but I feel that support of HDR in ACR and Bridge is limited compared to working with camera raw files (i.e. NEF).

I would really like an option for Adobe Camera Raw to treat .hdr and .exr files like camera raw files (i.e. sidecar file support for ACR adjustements. Open in ACR via Bridge)

As of now I can make global adjustments to an .exr and save the setting as a generic file; however, it does not save local adjustments like gradients, spot removal, etc. I also want to be able to save snapshots of my edits in ACR like I can for camera raw files.

Currently to save all my edits of an .exr file requires that I save my project as a 32bit PSD or .tiff which generates file sizes in the hundreds of MBs as opposed to a saving my edits in a sidecar file for an .exr that is 50MB. or less.

Thank you!

3

Responses

Official Solution

Employee

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626 Messages

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11.4K Points

6 years ago

I suggest converting your EXR/HDR files to TIFF which you can then open in ACR and treat like a linear scene-referred raw file for the purposes of tone mapping and image rendering.

6 Messages

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220 Points

Thanks for your response.

Your suggestion is in fact what I currently do as mentioned in my original post. I also explained the drawback to this being that PSD and TIFFs generate huge file sizes that make archiving my work costly and editing the files slow. I have 32bit PSD/TIFF panoramas that end up being gigabytes before any editing as opposed to openEXR/HDR which are fractions of the size.

Ideally I would like to non-destructively tone map my HDR panoramas in ACR (or something like ACR) and save my edits in a sidecar file so I can always return and make adjustments working with the original HDR source. In short something that will do for HDR what ACR does for camera raw.

If ACR simply can't be programmed to work with openEXR files, then is it possible to create a a hybrid file format that is compatible with ACR yet retains reasonable file sizes, or perhaps a separate ACR-like editor for HDR formats? I don't know, just spit balling ideas here.

Out of curiosity I'd like to know what makes a 32bit floating point Tiff compatible with ACR and a 32bit floating point HDR file incompatible.

Thanks for your patience explaining this stuff to me.

Best,
Chris

Employee

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626 Messages

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11.4K Points

Hi Chris,

Have you tried using the 16-bit float option for TIFF format? This should help quite a bit with the file sizes, though it won't be as small as (lossy or lossless) compressed OpenEXR files.

187 Messages

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2.6K Points

TIFF has many options, what is the best settings ? I to am looking for a method to convert RAW/DNG to EXR successfully without any hacking going on behind the scenes.

15.1K Messages

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195.8K Points

6 years ago

Um, it can't -- EXR is a High Dynamic Range format, nothing like camera raw files.

6 Messages

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220 Points

6 years ago

I understand that openEXR is not the same as camera raw just like a 32bit floating point TIFF file is not the same as camera raw; however, there is an option to open 32bit tiffs in camera raw, make adjustments and have the adjustments saved non-destructively. The option is under Camera Raw Preferences in Bridge as seen here:


My thinking is that if a 32bit floating point Tiff has the same ACR support as camera raw files then why not 32bit floating point openEXR or HDR images?

Thanks!

187 Messages

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2.6K Points

6 years ago

TIFF has many options, what is the best settings ? I to am looking for a method to convert RAW/DNG to EXR successfully without any hacking going on behind the scenes.

Employee

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626 Messages

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11.4K Points

Chris, out of curiosity, why are you trying to convert raw/DNG files to EXR?  Raw/DNG files are basically high dynamic range files already (compared to, say, a typical display or print, which has a much lower reproduction contrast range).  I would simply recommend that you tone map (or "render") the raw/DNG in your preferred raw conversion software.

187 Messages

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2.6K Points

6 years ago

RAW/DNG are Linear (1.0) ? I want to work at times exclusively with EXR. Tone mapping RAW/DNG would mean changing it to 2.2 Gamma !

Employee

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626 Messages

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11.4K Points

Chris, I'm still not clear on what you're trying to do with your images.  (File formats and gamma have relatively little to do with image appearance.)  Are you trying to get them to look a specific way?  Do you have examples you could share?

187 Messages

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2.6K Points

I prefer when I can to shoot in DNG (30 bits) I want to save those DNG files as EXR because the render engine I use does not read DNG, but can read EXR files.

Create the modifications to the image in DNG format, then save to EXR. Photoshop native EXR plugin doesn't do a good Job and some of the other EXR extensions work well but are somewhat costly.

15.1K Messages

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195.8K Points

What do you mean by "Photoshop native EXR plugin doesn't do a good Job"?

187 Messages

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2.6K Points

When I open a 32 bit floating EXR into Photoshop, using Photoshops native EXR loader it is red, when I use a demo version of ProEXR it is represented in gray scale as it is preferable to work with, if not the way it should look when loading EXR.

187 Messages

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2.6K Points

What is ProEXR doing to the file that Photoshop is not ?

187 Messages

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2.6K Points

5 years ago

Ah, crap is right. Then there is no solution at this point, until from what it seams like possibly coming in PsCC-2015 ?

15.1K Messages

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195.8K Points

No, we have no significant changes for EXR support planned in the near future. (I've got a few minor bug fixes for it, but that's all). And, again, this request is really debatable since Photoshop is already doing what the file says it should (display the red channel).

187 Messages

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2.6K Points

I made a request to the developers of the other software program. Thanks for the help, it helps !

15.1K Messages

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195.8K Points

Sorry I didn't have an easy solution. And doubly sorry that I led you astray on Grayscale support. (but maybe I should spend a few more weekends trying to make that work)

187 Messages

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2.6K Points

If and when you can get it to work, please let me know, as of now I'm having no success !

15.1K Messages

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195.8K Points

Well, first I have to disable the other 90% of what I was working on (which is best described as "a technology not ready for prime time").

2 Messages

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82 Points

2 months ago

This reply was created from a merged topic originally titled OpenEXR Adobe Camera Raw.

I like using the camera raw settings on potos from my DSLR. I would like the ability to also use Adobe Camera Raw to process digital renders from blender. The format I save renders from blender in is OpenEXR.